Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e1a9f6a59e01792…

MALICIOUS

PDF

43.9 KB Created: 2020-08-26 05:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d9898c0ef3ef2b73e9e315a5ad807073 SHA-1: 638c27e4f882946a662a16032a065ac92ef9e02b SHA-256: 2e1a9f6a59e01792a53e328652b288e80dbab06c0a1ede71b30bb641d840b428
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/pify?keyword=jo+frost+extreme+parental+guidance+jack In PDF document text
    • http://diselezi.steinwaywhisperer.com/uploads/1/3/1/4/131482975/8370170.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/73812363493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8219/4852/files/69433468215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/zexovexabujorisef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/upcatet_bsc_agriculture_entrance_exam_model_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1344/6564/files/xonufisir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/78488383433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/rijoxoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5392/2969/files/96087712215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1325/7885/files/past_continuous_tense_worksheet_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/87263822977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/musarikixupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/fivewatilana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9827/0885/files/psychology_11th_edition_myers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 5672 bytes
SHA-256: d683bb7056982899382cd12bdafdafdc0118a9e45c68fa0301b59ef628dcdeaa
font_01_sfnt_off0000810a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810A 9808 bytes
SHA-256: 00f3150511ce3200caa937f6fdbd1f55910f10d11e31282bf323ffd9f40336d6

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